1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2018-2021, Intel Corporation. */
10  * ice_lag_nop_handler - no-op Rx handler to disable LAG
19  * ice_lag_set_primary - set PF LAG state as Primary
24 	struct ice_pf *pf = lag->pf;  in ice_lag_set_primary()
29 	if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_BACKUP) {  in ice_lag_set_primary()
31 			 netdev_name(lag->netdev));  in ice_lag_set_primary()
35 	lag->role = ICE_LAG_PRIMARY;  in ice_lag_set_primary()
39  * ice_lag_set_backup - set PF LAG state to Backup
44 	struct ice_pf *pf = lag->pf;  in ice_lag_set_backup()
49 	if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_PRIMARY) {  in ice_lag_set_backup()
51 			netdev_name(lag->netdev));  in ice_lag_set_backup()
55 	lag->role = ICE_LAG_BACKUP;  in ice_lag_set_backup()
59  * ice_display_lag_info - print LAG info
64 	const char *name, *peer, *upper, *role, *bonded, *master;  in ice_display_lag_info()  local
65 	struct device *dev = &lag->pf->pdev->dev;  in ice_display_lag_info()
67 	name = lag->netdev ? netdev_name(lag->netdev) : "unset";  in ice_display_lag_info()
68 	peer = lag->peer_netdev ? netdev_name(lag->peer_netdev) : "unset";  in ice_display_lag_info()
69 	upper = lag->upper_netdev ? netdev_name(lag->upper_netdev) : "unset";  in ice_display_lag_info()
70 	master = lag->master ? "TRUE" : "FALSE";  in ice_display_lag_info()
71 	bonded = lag->bonded ? "BONDED" : "UNBONDED";  in ice_display_lag_info()
73 	switch (lag->role) {  in ice_display_lag_info()
75 		role = "NONE";  in ice_display_lag_info()
78 		role = "PRIMARY";  in ice_display_lag_info()
81 		role = "BACKUP";  in ice_display_lag_info()
84 		role = "UNSET";  in ice_display_lag_info()
87 		role = "ERROR";  in ice_display_lag_info()
90 	dev_dbg(dev, "%s %s, peer:%s, upper:%s, role:%s, master:%s\n", name,  in ice_display_lag_info()
91 		bonded, peer, upper, role, master);  in ice_display_lag_info()
95  * ice_lag_info_event - handle NETDEV_BONDING_INFO event
97  * @ptr: opaque data pointer
110 	lag_netdev_name = netdev_name(lag->netdev);  in ice_lag_info_event()
111 	bonding_info = &info->bonding_info;  in ice_lag_info_event()
113 	if (event_netdev != lag->netdev || !lag->bonded || !lag->upper_netdev)  in ice_lag_info_event()
116 	if (bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) {  in ice_lag_info_event()
117 		netdev_dbg(lag->netdev, "Bonding event recv, but mode not active/backup\n");  in ice_lag_info_event()
121 	if (strcmp(bonding_info->slave.slave_name, lag_netdev_name)) {  in ice_lag_info_event()
122 		netdev_dbg(lag->netdev, "Bonding event recv, but slave info not for us\n");  in ice_lag_info_event()
126 	if (bonding_info->slave.state)  in ice_lag_info_event()
136  * ice_lag_link - handle LAG link event
143 	struct net_device *netdev_tmp, *upper = info->upper_dev;  in ice_lag_link()
144 	struct ice_pf *pf = lag->pf;  in ice_lag_link()
147 	if (lag->bonded)  in ice_lag_link()
149 			 netdev_name(lag->netdev));  in ice_lag_link()
156 	if (lag->upper_netdev != upper) {  in ice_lag_link()
158 		lag->upper_netdev = upper;  in ice_lag_link()
164 	lag->bonded = true;  in ice_lag_link()
165 	lag->role = ICE_LAG_UNSET;  in ice_lag_link()
168 	lag->master = !!(peers == 1);  in ice_lag_link()
172  * ice_lag_unlink - handle unlink event
180 	struct net_device *netdev_tmp, *upper = info->upper_dev;  in ice_lag_unlink()
181 	struct ice_pf *pf = lag->pf;  in ice_lag_unlink()
184 	if (!lag->bonded) {  in ice_lag_unlink()
185 		netdev_dbg(lag->netdev, "bonding unlink event on non-LAG netdev\n");  in ice_lag_unlink()
192 		if (netdev_tmp == lag->netdev) {  in ice_lag_unlink()
202 	if (lag->upper_netdev) {  in ice_lag_unlink()
203 		dev_put(lag->upper_netdev);  in ice_lag_unlink()
204 		lag->upper_netdev = NULL;  in ice_lag_unlink()
207 	if (lag->peer_netdev) {  in ice_lag_unlink()
208 		dev_put(lag->peer_netdev);  in ice_lag_unlink()
209 		lag->peer_netdev = NULL;  in ice_lag_unlink()
214 	lag->bonded = false;  in ice_lag_unlink()
215 	lag->role = ICE_LAG_NONE;  in ice_lag_unlink()
219  * ice_lag_changeupper_event - handle LAG changeupper event
221  * @ptr: opaque pointer data
234 	if (netdev != lag->netdev)  in ice_lag_changeupper_event()
237 	if (!info->upper_dev) {  in ice_lag_changeupper_event()
242 	netdev_dbg(netdev, "bonding %s\n", info->linking ? "LINK" : "UNLINK");  in ice_lag_changeupper_event()
244 	if (!netif_is_lag_master(info->upper_dev)) {  in ice_lag_changeupper_event()
249 	if (info->linking)  in ice_lag_changeupper_event()
258  * ice_lag_changelower_event - handle LAG changelower event
260  * @ptr: opaque data pointer
268 	if (netdev != lag->netdev)  in ice_lag_changelower_event()
278  * ice_lag_event_handler - handle LAG events from netdev
281  * @ptr: opaque data containing notifier event
292 	if (!lag->netdev)  in ice_lag_event_handler()
320  * ice_register_lag_handler - register LAG handler on netdev
325 	struct device *dev = ice_pf_to_dev(lag->pf);  in ice_register_lag_handler()
328 	notif_blk = &lag->notif_block;  in ice_register_lag_handler()
330 	if (!notif_blk->notifier_call) {  in ice_register_lag_handler()
331 		notif_blk->notifier_call = ice_lag_event_handler;  in ice_register_lag_handler()
333 			notif_blk->notifier_call = NULL;  in ice_register_lag_handler()
335 			return -EINVAL;  in ice_register_lag_handler()
343  * ice_unregister_lag_handler - unregister LAG handler on netdev
348 	struct device *dev = ice_pf_to_dev(lag->pf);  in ice_unregister_lag_handler()
351 	notif_blk = &lag->notif_block;  in ice_unregister_lag_handler()
352 	if (notif_blk->notifier_call) {  in ice_unregister_lag_handler()
359  * ice_init_lag - initialize support for LAG
372 	pf->lag = kzalloc(sizeof(*lag), GFP_KERNEL);  in ice_init_lag()
373 	if (!pf->lag)  in ice_init_lag()
374 		return -ENOMEM;  in ice_init_lag()
375 	lag = pf->lag;  in ice_init_lag()
380 		err = -EIO;  in ice_init_lag()
384 	lag->pf = pf;  in ice_init_lag()
385 	lag->netdev = vsi->netdev;  in ice_init_lag()
386 	lag->role = ICE_LAG_NONE;  in ice_init_lag()
387 	lag->bonded = false;  in ice_init_lag()
388 	lag->peer_netdev = NULL;  in ice_init_lag()
389 	lag->upper_netdev = NULL;  in ice_init_lag()
390 	lag->notif_block.notifier_call = NULL;  in ice_init_lag()
405 	pf->lag = NULL;  in ice_init_lag()
410  * ice_deinit_lag - Clean up LAG
420 	lag = pf->lag;  in ice_deinit_lag()
425 	if (lag->pf)  in ice_deinit_lag()
428 	if (lag->upper_netdev)  in ice_deinit_lag()
429 		dev_put(lag->upper_netdev);  in ice_deinit_lag()
431 	if (lag->peer_netdev)  in ice_deinit_lag()
432 		dev_put(lag->peer_netdev);  in ice_deinit_lag()
436 	pf->lag = NULL;  in ice_deinit_lag()